Answer:
Option B. 39.8 ml of milk will be required.
Explanation:
Cooper is measuring ingredients for his special dessert.
He needs total of 70.04 ml of milk and melted butter.
So total quality of recipe = quantity of milk + quantity of butter
70.4 = Quantity of milk + 30.6
Quantity of milk = 70.4 - 30.6
= 39.8 ml
Therefore, 39.8 ml of milk will be required.
Option B 39.8ml